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[d3d11] Clamp and validate bound constant buffer range

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SetConstantBuffers will only bind the first 65536 bytes of any
buffer passed to it if it is larger. This can be seen even when
querying the bound range via GetConstantBuffers1.

SetConstantBuffers1 does not have any effect if the bound range
is invalid.
This commit is contained in:
Philip Rebohle 2020-09-14 16:47:07 +02:00
parent 81632b91bb
commit 4801fbe098
No known key found for this signature in database
GPG Key ID: C8CC613427A31C99
2 changed files with 12 additions and 25 deletions
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33
src/d3d11/d3d11_context.cpp
View File

@ -3497,18 +3497,6 @@ namespace dxvk {
void D3D11DeviceContext::BindConstantBuffer(
UINT Slot,
D3D11Buffer* pBuffer) {
EmitCs([
cSlotId = Slot,
cBufferSlice = pBuffer ? pBuffer->GetBufferSlice() : DxvkBufferSlice()
] (DxvkContext* ctx) {
ctx->bindResourceBuffer(cSlotId, cBufferSlice);
});
}
void D3D11DeviceContext::BindConstantBuffer1(
UINT Slot,
D3D11Buffer* pBuffer,
UINT Offset,
@ -3628,19 +3616,19 @@ namespace dxvk {
for (uint32_t i = 0; i < NumBuffers; i++) {
auto newBuffer = static_cast<D3D11Buffer*>(ppConstantBuffers[i]);
UINT constantBound = 0;
UINT constantCount = 0;
if (likely(newBuffer != nullptr))
constantBound = newBuffer->Desc()->ByteWidth / 16;
constantCount = std::min(newBuffer->Desc()->ByteWidth / 16, UINT(D3D11_REQ_CONSTANT_BUFFER_ELEMENT_COUNT));
if (Bindings[StartSlot + i].buffer != newBuffer
|| Bindings[StartSlot + i].constantBound != constantBound) {
|| Bindings[StartSlot + i].constantCount != constantCount) {
Bindings[StartSlot + i].buffer = newBuffer;
Bindings[StartSlot + i].constantOffset = 0;
Bindings[StartSlot + i].constantCount = constantBound;
Bindings[StartSlot + i].constantBound = constantBound;
Bindings[StartSlot + i].constantCount = constantCount;
Bindings[StartSlot + i].constantBound = constantCount;
BindConstantBuffer(slotId + i, newBuffer);
BindConstantBuffer(slotId + i, newBuffer, 0, constantCount);
}
}
}
@ -3664,12 +3652,15 @@ namespace dxvk {
UINT constantBound;
if (likely(newBuffer != nullptr)) {
constantBound = newBuffer->Desc()->ByteWidth / 16;
constantBound = std::min(newBuffer->Desc()->ByteWidth / 16, UINT(D3D11_REQ_CONSTANT_BUFFER_ELEMENT_COUNT));
if (likely(pFirstConstant && pNumConstants)) {
constantOffset = pFirstConstant[i];
constantCount = pNumConstants [i];
if (unlikely(constantCount > D3D11_REQ_CONSTANT_BUFFER_ELEMENT_COUNT))
continue;
constantBound = (constantOffset + constantCount > constantBound)
? constantBound - std::min(constantOffset, constantBound)
: constantCount;
@ -3696,7 +3687,7 @@ namespace dxvk {
Bindings[StartSlot + i].constantCount = constantCount;
Bindings[StartSlot + i].constantBound = constantBound;
BindConstantBuffer1(slotId + i, newBuffer, constantOffset, constantBound);
BindConstantBuffer(slotId + i, newBuffer, constantOffset, constantBound);
}
}
}
@ -3937,7 +3928,7 @@ namespace dxvk {
uint32_t slotId = computeConstantBufferBinding(Stage, 0);
for (uint32_t i = 0; i < Bindings.size(); i++) {
BindConstantBuffer1(slotId + i, Bindings[i].buffer.ptr(),
BindConstantBuffer(slotId + i, Bindings[i].buffer.ptr(),
Bindings[i].constantOffset, Bindings[i].constantBound);
}
}

4
src/d3d11/d3d11_context.h
View File

@ -763,10 +763,6 @@ namespace dxvk {
UINT Offset);
void BindConstantBuffer(
UINT Slot,
D3D11Buffer* pBuffer);
void BindConstantBuffer1(
UINT Slot,
D3D11Buffer* pBuffer,
UINT Offset,